Flight profile · SkyWest Airlines
OO3900
Detroit (DTW) to South Bend (SBN) · scheduled 7:45 PM – 8:48 PM
How OO3900 performs
734 operations, 2024-06-07 to 2026-06-30.
OO3900 arrived on time 61.1% of the time, against 69.4% for all DTW → SBN flights — this specific departure is 8.3 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 8.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 734 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO3900 | 61.1% | 0.82% | 4 min | 19.2% | 734 |
| SkyWest Airlines on DTW → SBN | 69.4% | 0.78% | -2 min | 14.3% | 1,403 |
| All DTW → SBN flights | 69.4% | 0.78% | -3 min | 14.3% | 1,405 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes OO3900 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| FWA→ATL Fort Wayne to Atlanta | 2024-07-13 – 2024-09-07 | 10 | — |
| RDU→LGA Raleigh–Durham to New York | 2024-05-08 – 2024-06-06 | 26 | — |
| CLE→DTW Cleveland to Detroit | 2024-05-07 – 2024-05-07 | 1 | — |
| DTW→IAD Detroit to Washington | 2024-04-09 – 2024-05-06 | 28 | — |
| ALB→DTW Albany to Detroit | 2024-03-10 – 2024-04-08 | 26 | — |
| DTW→ALB Detroit to Albany | 2024-03-10 – 2024-04-08 | 26 | — |
| SEA→LWS Seattle to Lewiston | 2024-01-08 – 2024-03-09 | 62 | — |
| SJC→SEA San Jose to Seattle | 2023-12-16 – 2024-01-07 | 19 | — |
| SEA→SJC Seattle to San Jose | 2023-12-17 – 2024-01-07 | 17 | — |
| ATL→EVV Atlanta to Evansville | 2023-12-24 – 2024-01-01 | 4 | — |
| SEA→SMF Seattle to Sacramento | 2023-09-05 – 2023-12-15 | 75 | — |
| SMF→SEA Sacramento to Seattle | 2023-09-05 – 2023-12-10 | 36 | — |
| SEA→ONT Seattle to Ontario | 2023-10-09 – 2023-11-04 | 27 | — |
| DTW→ELM Detroit to Elmira/Corning | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route OO3900 currently operates. Blending them would produce an average of two different flights.
Why OO3900 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for OO3900 on DTW → SBN. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 734 records of OO3900 operating DTW → SBN, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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